For all cases where a user is accessing shared data over a network (in other words, not using Basic authentication), Zendesk uses the OAuth authentication standard. This requires the creation of a custom OAuth application, as described here.

The following procedure registers a custon OAuth application and obtains the OAuth client credentials OAuthClientId and OAuthClientSecret.

1. Log in using an account that admin access to your Zendesk account.
2. In the Zendesk Support Admin interface, navigate to Admin > Channels > API.
3. On the Channels/API page, click the OAuth Clients tab.
4. At the right side of the client list, click the plus icon (+).
5. To create a client, complete the required fields:
   • Set the Redirect URI to http://localhost:33333 or a different port number of your choice. When you connect, you must set the CallbackURL connection property to this exact URL.
   • If you are making a desktop application, set the Redirect URI to http://localhost:33333 or a different port number of your choice.
   • If you are making a Web application, set the Redirect URI to a page on your Web application where you would like the user to be returned after they have authorized your application.
6. Click Save. After the page refreshes, a new prepopulated Secret field appears on the lower side.
7. Use the unique identifier as the OAuthClientId, and the secret value as the OAuthClientSecret.